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anv: Remove saturating cmat configurations when INTEL_LOWER_DPAS=1

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Since we don't have any DPAS-based implementation of those, it is odd to
support them in the emulation mode that is only enabled with the debug
flag INTEL_LOWER_DPAS nowadays.  Remove it.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41564>
This commit is contained in:
Caio Oliveira 2026-04-09 17:27:45 -07:00 • committed by Marge Bot
parent f9d54dad80
commit 6bcf70bd85
1 changed files with 0 additions and 37 deletions
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37
src/intel/vulkan/anv_physical_device.c
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@ -3478,43 +3478,6 @@ VkResult anv_GetPhysicalDeviceCooperativeMatrixPropertiesKHR(
prop->saturatingAccumulation = VK_FALSE;
prop->scope = convert_scope(cfg->scope);
}
/* VUID-RuntimeSpirv-saturatingAccumulation-08983 says:
*
* For OpCooperativeMatrixMulAddKHR, the SaturatingAccumulation
* cooperative matrix operand must be present if and only if
* VkCooperativeMatrixPropertiesKHR::saturatingAccumulation is
* VK_TRUE.
*
* As a result, we have to advertise integer configs both with and
* without this flag set.
*
* The DPAS instruction does not support the .sat modifier, so only
* advertise the configurations when the DPAS would be lowered.
*
* FINISHME: It should be possible to do better than full lowering on
* platforms that support DPAS. Emit a DPAS with a NULL accumulator
* argument, then perform the correct sequence of saturating add
* instructions.
*/
if (cfg->a != INTEL_CMAT_FLOAT16 &&
(devinfo->verx10 < 125 || debug_get_bool_option("INTEL_LOWER_DPAS", false))) {
vk_outarray_append_typed(VkCooperativeMatrixPropertiesKHR, &out, prop) {
prop->sType = VK_STRUCTURE_TYPE_COOPERATIVE_MATRIX_PROPERTIES_KHR;
prop->MSize = cfg->m;
prop->NSize = cfg->n;
prop->KSize = cfg->k;
prop->AType = convert_component_type(cfg->a);
prop->BType = convert_component_type(cfg->b);
prop->CType = convert_component_type(cfg->c);
prop->ResultType = convert_component_type(cfg->result);
prop->saturatingAccumulation = VK_TRUE;
prop->scope = convert_scope(cfg->scope);
}
}
}
return vk_outarray_status(&out);